1
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Miceli R, Allen NG, Subramaniam B, Carmody L, Dordick JS, Corr DT, Cotten M, Gross RA. Synergistic Treatment of Breast Cancer by Combining the Antimicrobial Peptide Piscidin with a Modified Glycolipid. ACS OMEGA 2024; 9:33408-33424. [PMID: 39130564 PMCID: PMC11308023 DOI: 10.1021/acsomega.3c09902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 04/30/2024] [Accepted: 06/11/2024] [Indexed: 08/13/2024]
Abstract
Piscidin 3 (P3), a peptide produced by fish, and a hexyl ester-modified sophorolipid (SL-HE), have individually shown promise as antimicrobial and anticancer drugs. A recent report by our team revealed that combining P3 with SL-HE in a 1:8 molar ratio resulted in an 8-fold enhancement in peptide activity, while SL-HE improved by 25-fold its antimicrobial activity against the Gram-positive microorganism Bacillus cereus. Extending these findings, the same P3/SL-HE combination was assessed on two breast cancer cell lines: BT-474, a hormonally positive cell line, and MDA-MB-231, an aggressive triple-negative cell line. The results demonstrated that the 1:8 molar ratio of P3/SL-HE synergistically enhances the anticancer effects against both tumorigenic breast cell lines. Mechanistic studies indicate the activation of an intrinsic apoptotic cell death mechanism through an increase in reactive oxygen species and mitochondrial dysfunction and a secondary programmed necrotic pathway that involves pore formation in the plasma membrane. When a fibroblast cell line, CCD1065SK HDF, was utilized to determine selectivity, the synergistic SL-HE/P3 combination exhibited a protective property compared to the use of SL-HE alone and therefore afforded vastly improved selectivity indices. Given the promising results reported herein, the synergistic combination of P3/SL-HE constitutes a novel strategy that merits further study for the treatment of breast cancer.
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Affiliation(s)
- Rebecca
T. Miceli
- Department
of Chemistry and Chemical Biology, Rensselaer
Polytechnic Institute, Troy, New York 12180, United States
- Center
for Biotechnology and Interdisciplinary Sciences, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Noah G. Allen
- Department
of Biomedical Engineering, Rensselaer Polytechnic
Institute, Troy, New York 12180, United States
- Center
for Biotechnology and Interdisciplinary Sciences, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Bhagyashree Subramaniam
- Department
of Chemistry and Chemical Biology, Rensselaer
Polytechnic Institute, Troy, New York 12180, United States
- Center
for Biotechnology and Interdisciplinary Sciences, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Livia Carmody
- Department
of Chemistry and Chemical Biology, Rensselaer
Polytechnic Institute, Troy, New York 12180, United States
| | - Jonathan S. Dordick
- Department
of Biomedical Engineering, Rensselaer Polytechnic
Institute, Troy, New York 12180, United States
- Department
of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
- Center
for Biotechnology and Interdisciplinary Sciences, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - David T. Corr
- Department
of Biomedical Engineering, Rensselaer Polytechnic
Institute, Troy, New York 12180, United States
| | - Myriam Cotten
- Department
of Applied Science, William & Mary, Williamsburg, Virginia 23185, United States
| | - Richard A. Gross
- Department
of Chemistry and Chemical Biology, Rensselaer
Polytechnic Institute, Troy, New York 12180, United States
- Center
for Biotechnology and Interdisciplinary Sciences, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
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2
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Ingham B, Sung R, Kay P, Hollywood K, Wongsirichot P, Veitch A, Winterburn J. Determining the accuracy and suitability of common analytical techniques for sophorolipid biosurfactants. J Ind Microbiol Biotechnol 2024; 51:kuae021. [PMID: 38906848 PMCID: PMC11223654 DOI: 10.1093/jimb/kuae021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 06/20/2024] [Indexed: 06/23/2024]
Abstract
To determine the performance of a sophorolipid biosurfactant production process, it is important to have accurate and specific analytical techniques in place. Among the most popular are the anthrone assay, gravimetric quantification (hexane:ethyl acetate extraction), and high-performance liquid chromatography (HPLC). The choice of analytical tool varies depending on cost, availability, and ease of use; however, these techniques have never been compared directly against one another. In this work, 75 fermentation broths with varying product/substrate concentrations were comprehensively tested with the 3 techniques and compared. HPLC-ultraviolet detection (198 nm) was capable of quantifying C18:1 subterminal hydroxyl diacetylated lactonic sophorolipid down to a lower limit of 0.3 g/L with low variability (<3.21%). Gravimetric quantification of the broths following liquid:liquid extraction with hexane and ethyl acetate showed some linearity (R2 = .658) when compared to HPLC but could not quantify lower than 11.06 g/L, even when no sophorolipids were detected in the sample, highlighting the non-specificity of the method to co-extract non-sophorolipid components in the final gravimetric measure. The anthrone assay showed no linearity (R2 = .129) and was found to cross-react with media components (rapeseed oil, corn steep liquor, glucose), leading to consistent overestimation of sophorolipid concentration. The appearance of poor biomass separation during sample preparation with centrifugation was noted and resolved with a novel sample preparation method with pure ethanol. Extensive analysis and comparisons of the most common sophorolipid quantification techniques are explored and the limitations/advantages are highlighted. The findings provide a guide for scientists to make an informed decision on the suitable quantification tool that meets their needs, exploring all aspects of the analysis process from harvest, sample preparation, and analysis.
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Affiliation(s)
- Benjamin Ingham
- Department of Chemical Engineering, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Rehana Sung
- Manchester Institute of Biotechnology, Department of Chemistry, University of Manchester, Manchester M1 7DN, UK
| | - Phil Kay
- JMP Statistical Discovery LLC, Wittington House, Henley Road, Medmenham, Marlow SL7 2EB, UK
| | - Katherine Hollywood
- Manchester Institute of Biotechnology, Department of Chemistry, University of Manchester, Manchester M1 7DN, UK
| | - Phavit Wongsirichot
- Department of Chemical Engineering, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Alistair Veitch
- Holiferm Ltd, Unit 15, Severnside Trading Estate, Textilose Road, Trafford Park, Stretford, Manchester M17 1WA, UK
| | - James Winterburn
- Department of Chemical Engineering, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
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3
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Liu F, Greenwood AI, Xiong Y, Miceli RT, Fu R, Anderson KW, McCallum SA, Mihailescu M, Gross R, Cotten ML. Host Defense Peptide Piscidin and Yeast-Derived Glycolipid Exhibit Synergistic Antimicrobial Action through Concerted Interactions with Membranes. JACS AU 2023; 3:3345-3365. [PMID: 38155643 PMCID: PMC10751773 DOI: 10.1021/jacsau.3c00506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 09/25/2023] [Accepted: 09/29/2023] [Indexed: 12/30/2023]
Abstract
Developing new antimicrobials as alternatives to conventional antibiotics has become an urgent race to eradicate drug-resistant bacteria and to save human lives. Conventionally, antimicrobial molecules are studied independently even though they can be cosecreted in vivo. In this research, we investigate two classes of naturally derived antimicrobials: sophorolipid (SL) esters as modified yeast-derived glycolipid biosurfactants that feature high biocompatibility and low production cost; piscidins, which are host defense peptides (HDPs) from fish. While HDPs such as piscidins target the membrane of pathogens, and thus result in low incidence of resistance, SLs are not well understood on a mechanistic level. Here, we demonstrate that combining SL-hexyl ester (SL-HE) with subinhibitory concentration of piscidins 1 (P1) and 3 (P3) stimulates strong antimicrobial synergy, potentiating a promising therapeutic window. Permeabilization assays and biophysical studies employing circular dichroism, NMR, mass spectrometry, and X-ray diffraction are performed to investigate the mechanism underlying this powerful synergy. We reveal four key mechanistic features underlying the synergistic action: (1) P1/3 binds to SL-HE aggregates, becoming α-helical; (2) piscidin-glycolipid assemblies synergistically accumulate on membranes; (3) SL-HE used alone or bound to P1/3 associates with phospholipid bilayers where it induces defects; (4) piscidin-glycolipid complexes disrupt the bilayer structure more dramatically and differently than either compound alone, with phase separation occurring when both agents are present. Overall, dramatic enhancement in antimicrobial activity is associated with the use of two membrane-active agents, with the glycolipid playing the roles of prefolding the peptide, coordinating the delivery of both agents to bacterial surfaces, recruiting the peptide to the pathogenic membranes, and supporting membrane disruption by the peptide. Given that SLs are ubiquitously and safely used in consumer products, the SL/peptide formulation engineered and mechanistically characterized in this study could represent fertile ground to develop novel synergistic agents against drug-resistant bacteria.
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Affiliation(s)
- Fei Liu
- Department
of Chemistry, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Alexander I. Greenwood
- Department
of Applied Science, William & Mary, Williamsburg, Virginia 23185, United States
| | - Yawei Xiong
- Department
of Applied Science, William & Mary, Williamsburg, Virginia 23185, United States
| | - Rebecca T. Miceli
- Department
of Chemistry, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
- Center
for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Riqiang Fu
- Center
of Interdisciplinary Magnetic Resonance, National High Magnetic Field Laboratory, Tallahassee, Florida 32310, United States
| | - Kyle W. Anderson
- National
Institute of Standards and Technology, Rockville, Maryland 20850, United States
| | - Scott A. McCallum
- Center
for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Mihaela Mihailescu
- Institute
for Bioscience and Biotechnology Research, University of Maryland, Rockville, Maryland 20850, United States
| | - Richard Gross
- Department
of Chemistry, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
- Center
for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Myriam L. Cotten
- Department
of Applied Science, William & Mary, Williamsburg, Virginia 23185, United States
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Roberge CL, Miceli RT, Murphy LR, Kingsley DM, Gross RA, Corr DT. Sophorolipid Candidates Demonstrate Cytotoxic Efficacy against 2D and 3D Breast Cancer Models. JOURNAL OF NATURAL PRODUCTS 2023; 86:1159-1170. [PMID: 37104545 PMCID: PMC10760934 DOI: 10.1021/acs.jnatprod.2c00804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Sophorolipids are biosurfactants derived from the nonpathogenic yeasts such as Starmerella bombicola with potential efficacy in anticancer applications. Simple and cost-effective synthesis of these drugs makes them a promising alternative to traditional chemotherapeutics, pending their success in preliminary drug-screening. Drug-screening typically utilizes 2D cell monolayers due to their simplicity and ease of high-throughput assessment. However, 2D assays fail to capture the complexity and 3D context of the tumor microenvironment and have consequently been implicated in the high percentage of drugs investigated in vitro that later fail in clinical trials. Herein, we screened two sophorolipid candidates and a clinically-used chemotherapeutic, doxorubicin, on in vitro breast cancer models ranging from 2D monolayers to 3D spheroids, employing optical coherence tomography to confirm these morphologies. We calculated corresponding IC50 values for these drugs and found one of the sophorolipids to have comparable toxicities to the chemotherapeutic control. Our findings show increased drug resistance associated with model dimensionality, such that all drugs tested showed that 3D spheroids exhibited higher IC50 values than their 2D counterparts. These findings demonstrate promising preliminary data to support the use of sophorolipids as a more affordable alternative to traditional clinical interventions and demonstrate the importance of 3D tumor models in assessing drug response.
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Affiliation(s)
- Cassandra L Roberge
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Rebecca T Miceli
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
- Center for Biotechnology and Interdisciplinary Sciences, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Lillian R Murphy
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - David M Kingsley
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Richard A Gross
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
- Center for Biotechnology and Interdisciplinary Sciences, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - David T Corr
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
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5
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Wang X, Amason AC, Lei Y, Gabbard R, Wieland JA, Gross RA. Bio-based alternative for encapsulating fragrance oils in epoxy resin microcapsules. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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Sałek K, Euston SR, Janek T. Phase Behaviour, Functionality, and Physicochemical Characteristics of Glycolipid Surfactants of Microbial Origin. Front Bioeng Biotechnol 2022; 10:816613. [PMID: 35155390 PMCID: PMC8830654 DOI: 10.3389/fbioe.2022.816613] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 01/10/2022] [Indexed: 01/14/2023] Open
Abstract
Growing demand for biosurfactants as environmentally friendly counterparts of chemically derived surfactants enhances the extensive search for surface-active compounds of biological (microbial) origin. The understanding of the physicochemical properties of biosurfactants such as surface tension reduction, dispersion, emulsifying, foaming or micelle formation is essential for the successful application of biosurfactants in many branches of industry. Glycolipids, which belong to the class of low molecular weight surfactants are currently gaining a lot of interest for industrial applications. For this reason, we focus mainly on this class of biosurfactants with particular emphasis on rhamnolipids and sophorolipids, the most studied of the glycolipids.
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Affiliation(s)
- Karina Sałek
- Institute for Life and Earth Sciences, School of Energy, Geoscience, Infrastructure and Society, Heriot-Watt University, Edinburgh, United Kingdom
- *Correspondence: Karina Sałek,
| | - Stephen R. Euston
- Institute of Biological Chemistry, Biophysics and Bioengineering, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, United Kingdom
| | - Tomasz Janek
- Department of Biotechnology and Food Microbiology, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
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7
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Singh SK, Dey S, Schneider MP, Nandi S. d-Mannitol based surfactants for cosmetic and food applications and hydrogels to produce stabilized Ag nanoparticles. NEW J CHEM 2022. [DOI: 10.1039/d2nj00463a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel synthetic approach for lipid modification of mannitol for hydrogelation, cosmetic and food application.
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Affiliation(s)
- Santosh Kumar Singh
- Department of Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, India
| | - Swapan Dey
- Department of Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, India
| | - Manfred P. Schneider
- FB C - Organische Chemie, Bergische Universitat Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany
| | - Sukhendu Nandi
- Department of Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, India
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8
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He W, Zhu W, Bu Y, Wang W, Li X, Li J, Zhang Y. Formation of colloidal micro-nano particles and flavor characteristics of Greenland halibut bone soup. J Food Sci 2021; 87:216-230. [PMID: 34841524 DOI: 10.1111/1750-3841.15979] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 10/17/2021] [Accepted: 10/21/2021] [Indexed: 11/30/2022]
Abstract
In this study, halibut bone, a byproduct of Greenland halibut processing, was prepared into a thick soup through a non-frying process. The formation of colloidal micro-nano particles and flavor characteristics in halibut bone soup was explored. The results showed that the nutrients in halibut bones migrated to the soup continuously with the cooking process and reached the highest concentration (total sugars, 38.16 mg/100 ml; water-soluble proteins, 25.71 mg/ml; fatty acids, 2.15 g/100 ml; solids, 1.14 g/100 ml) at 150 min. Taste substances such as organic acids, 5'-nucleotides and total free amino acids (TFAAs) content in halibut bone soup also reached maximum at 150 min. At this time, results for particle size showed that MNPs with uniform size (725.62 nm) were formed, which made the bone soup milky white, stable, and had good tasting. Headspace-gas chromatography-ion mobility spectrometry results showed that a total of 59 volatile substances were detected from the halibut bone soup. The content of volatile flavor substances in the 150 min group was lower than that in the 90-120 min group. Meanwhile, aldehydes and ketones gradually became esters. PRACTICAL APPLICATION: Soup is an indispensable part of the world food culture. In order to increase the added value of Greenland halibut, halibut bone soup was studied in this paper. This study found that halibut bone soup that had not been fried, formed the MNPs and has a more harmonious and pleasant flavor. Thus, non-fried halibut bone soup is a good processing method and can improve economic efficiency.
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Affiliation(s)
- Wei He
- College of Food Science and Engineering, Bohai University, Jinzhou, China
| | - Wenhui Zhu
- College of Food Science and Engineering, Bohai University, Jinzhou, China
| | - Ying Bu
- College of Food Science and Engineering, Bohai University, Jinzhou, China
| | - Wenxuan Wang
- College of Food Science and Engineering, Bohai University, Jinzhou, China
| | - Xuepeng Li
- College of Food Science and Engineering, Bohai University, Jinzhou, China
| | - Jianrong Li
- College of Food Science and Engineering, Bohai University, Jinzhou, China
| | - Yuyu Zhang
- Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University (BTBU), Beijing, China
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9
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Zhu W, He W, Wang W, Bu Y, Li X, Li J, Zhang Y. Effects of thermoultrasonic treatment on characteristics of micro-nano particles and flavor in Greenland halibut bone soup. ULTRASONICS SONOCHEMISTRY 2021; 79:105785. [PMID: 34653917 PMCID: PMC8527050 DOI: 10.1016/j.ultsonch.2021.105785] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/26/2021] [Accepted: 10/06/2021] [Indexed: 05/25/2023]
Abstract
In order to investigate the effects of thermoultrasonic treatment (TUT) on the formation of colloidal micro-nano particles (MNPs) and the quality of halibut bone soup, nutrients, particle characteristics, and flavor characteristics were analyzed. The morphology of MNPs was studied using an optical microscope. Results showed that TUT could increase the nutrient content (total sugars, 22.15 mg/100 mL; water soluble proteins, 173.24 mg/mL; fatty acids, 1779.7 mg/100 mL; solids, 3.16 g/100 mL), reduce the particle size (605.92 nm) and interfacial tension. Meanwhile, TUT make the halibut bone soup has better emulsifying characteristics and stability. The contents of flavor substances, such as esters, 5'-nucleotides, organic acids in the halibut bone soup were more abundant, while the contents of hexanal and 1-octen-3-ol and fishy off-flavor were reduced in TUT group. The overall odor and taste outline were more harmonious. Therefore, TUT can be used in the production of high quality fish bone soup, and TUT could be considered as a good deep processing technology for halibut bone and improve economic efficiency.
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Affiliation(s)
- Wenhui Zhu
- College of Food Science and Engineering, Bohai University. Jinzhou, Liaoning 121013, China
| | - Wei He
- College of Food Science and Engineering, Bohai University. Jinzhou, Liaoning 121013, China
| | - Wenxuan Wang
- College of Food Science and Engineering, Bohai University. Jinzhou, Liaoning 121013, China
| | - Ying Bu
- College of Food Science and Engineering, Bohai University. Jinzhou, Liaoning 121013, China.
| | - Xuepeng Li
- College of Food Science and Engineering, Bohai University. Jinzhou, Liaoning 121013, China
| | - Jianrong Li
- College of Food Science and Engineering, Bohai University. Jinzhou, Liaoning 121013, China.
| | - Yuyu Zhang
- Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University (BTBU), Beijing 100048, China
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10
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pH-switchable pickering emulsions stabilized by polyelectrolyte-biosurfactant complex coacervate colloids. J Colloid Interface Sci 2021; 600:23-36. [DOI: 10.1016/j.jcis.2021.04.135] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 04/25/2021] [Accepted: 04/26/2021] [Indexed: 02/06/2023]
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11
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From bumblebee to bioeconomy: Recent developments and perspectives for sophorolipid biosynthesis. Biotechnol Adv 2021; 54:107788. [PMID: 34166752 DOI: 10.1016/j.biotechadv.2021.107788] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 06/16/2021] [Accepted: 06/17/2021] [Indexed: 12/16/2022]
Abstract
Sophorolipids are biobased compounds produced by the genera Starmerella and Pseudohyphozyma that gain exponential interest from academic and industrial stakeholders due to their mild and environmental friendly characteristics. Currently, industrially relevant sophorolipid volumetric productivities are reached up to 3.7 g∙L-1∙h-1 and sophorolipids are used in the personal care and cleaning industry at small scale. Moreover, applications in crop protection, food, biohydrometallurgy and medical fields are being extensively researched. The research and development of sophorolipids is at a crucial stage. Therefore, this work presents an overview of the state-of-the-art on sophorolipid research and their applications, while providing a critical assessment of scientific techniques and standardisation in reporting. In this review, the genuine sophorolipid producing organisms and the natural role of sophorolipids are discussed. Subsequently, an evaluation is made of innovations in production processes and the relevance of in-situ product recovery for process performance is discussed. Furthermore, a critical assessment of application research and its future perspectives are portrayed with a focus on the self-assembly of sophorolipid molecules. Following, genetic engineering strategies that affect the sophorolipid physiochemical properties are summarised. Finally, the impact of sophorolipids on the bioeconomy are uncovered, along with relevant future perspectives.
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12
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Totsingan F, Liu F, Gross RA. Structure-Activity Relationship Assessment of Sophorolipid Ester Derivatives against Model Bacteria Strains. Molecules 2021; 26:3021. [PMID: 34069408 PMCID: PMC8158775 DOI: 10.3390/molecules26103021] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/12/2021] [Accepted: 05/16/2021] [Indexed: 11/27/2022] Open
Abstract
Sophorolipids (SLs) are glycolipids that consist of a hydrophilic sophorose head group covalently linked to a hydrophobic fatty acid tail. They are produced by fermentation of non-pathogenic yeasts such as Candida Bombicola. The fermentation products predominantly consist of the diacetylated lactonic form that coexists with the open-chain acidic form. A systematic series of modified SLs were prepared by ring opening of natural lactonic SL with n-alkanols of varying chain length under alkaline conditions and lipase-selective acetylation of sophorose primary hydroxyl groups. The antimicrobial activity of modified SLs against Gram-positive human pathogens was a function of the n-alkanol length, as well as the degree of sophorose acetylation at the primary hydroxyl sites. Modified SLs were identified with promising antimicrobial activities against Gram-positive human pathogens with moderate selectivity (therapeutic index, TI = EC50/MICB. cereus = 6-33). SL-butyl ester exhibited the best antimicrobial activity (MIC = 12 μM) and selectivity (TI = 33) among all SLs tested. Kinetic studies revealed that SL-ester derivatives kill B. cereus in a time-dependent manner resulting in greater than a 3-log reduction in cell number within 1 h at 2×MIC. In contrast, lactonic SL required 3 h to achieve the same efficiency.
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Affiliation(s)
- Filbert Totsingan
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Fei Liu
- Center for Biotechnology and Interdisciplinary Studies (CBIS), Rensselaer Polytechnic Institute, Troy, NY 12180, USA;
| | - Richard A. Gross
- Center for Biotechnology and Interdisciplinary Studies (CBIS), Rensselaer Polytechnic Institute, Troy, NY 12180, USA;
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13
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Ma W, Dai S, Zhu P, Zhou R, Lu H. Dual CO 2 Responsiveness of an Oil-In-Water Emulsion by Using Sodium Oleate and Water-Soluble Tertiary Amines. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:750-758. [PMID: 33400537 DOI: 10.1021/acs.langmuir.0c03038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Two kinds of water-soluble tertiary amines (TAs), triethylamine (TEA, monoamine), and tetramethyltrimethylenediamine (TMA, diamine) were introduced into a NaOA stable oil-water (O/W) emulsion, respectively, and their dual reactivity to carbon dioxide was studied. TA was converted into bicarbonate after bubbling of CO2, which induced the increase of ionic strength of the aqueous phase, and formed ion pair with NaOA through electrostatic interaction. NaOA itself can also be protonated into oleic acid, which can be reverently deprotonated by alternating bubbles of CO2 at 25 °C and N2 at 50 °C, thus affecting the stability and demulsification process of the emulsion. In order to demonstrate TA's and NaOA's synergistic effect on CO2 responsiveness, gas chromatography-mass spectrometry, ζ potential, electrical conductivity, pH value, 1H nuclear magnetic resonance, morphological evolution, and interfacial tension were used to study the contributions of the single component and two components of NaOA, TEA, and TMA to emulsion stability and CO2 responsiveness, respectively. Combined with the composition distribution under different pH conditions, it was further proved that TAs had an effect on the stability and CO2 responsiveness of the NaOA emulsion.
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Affiliation(s)
- Wenjing Ma
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
| | - Shanshan Dai
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
- Engineering Research Center of Oilfield Chemistry, Ministry of Education, Chengdu 610500, P. R. China
| | - Peiyao Zhu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
| | - Ru Zhou
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
| | - Hongsheng Lu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
- Engineering Research Center of Oilfield Chemistry, Ministry of Education, Chengdu 610500, P. R. China
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14
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Gelatin enhances the flavor of chicken broth: A perspective on the ability of emulsions to bind volatile compounds. Food Chem 2020; 333:127463. [DOI: 10.1016/j.foodchem.2020.127463] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 06/25/2020] [Accepted: 06/28/2020] [Indexed: 11/19/2022]
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15
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Wang X, Lin RJ, Gross RA. Sophorolipid Butyl Ester: An Antimicrobial Stabilizer of Essential Oil-Based Emulsions and Interactions with Chitosan and γ-Poly(glutamic acid). ACS APPLIED BIO MATERIALS 2020; 3:5136-5147. [DOI: 10.1021/acsabm.0c00592] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xue Wang
- New York State Center for Polymer Synthesis, Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180, United States
- Center for Biotechnology and Interdisciplinary Studies, Department of Biological Sciences, Rensselaer Polytechnic Institute, 1623 15th Street, Troy, New York 12180, United States
| | - Raymond J. Lin
- New York State Center for Polymer Synthesis, Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180, United States
- Center for Biotechnology and Interdisciplinary Studies, Department of Biological Sciences, Rensselaer Polytechnic Institute, 1623 15th Street, Troy, New York 12180, United States
| | - Richard A. Gross
- New York State Center for Polymer Synthesis, Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180, United States
- Center for Biotechnology and Interdisciplinary Studies, Department of Biological Sciences, Rensselaer Polytechnic Institute, 1623 15th Street, Troy, New York 12180, United States
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16
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Jiménez‐Peñalver P, Koh A, Gross R, Gea T, Font X. Biosurfactants from Waste: Structures and Interfacial Properties of Sophorolipids Produced from a Residual Oil Cake. J SURFACTANTS DETERG 2019. [DOI: 10.1002/jsde.12366] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Pedro Jiménez‐Peñalver
- Composting Research Group, Department of Chemical, Biological and Environmental Engineering, Escola d'EnginyeriaUniversitat Autònoma de Barcelona, Bellaterra Barcelona 08193 Spain
| | - Amanda Koh
- Department of Chemical and Biological EngineeringUniversity of Alabama Tuscaloosa AL 35487 USA
| | - Richard Gross
- Center for Biotechnology and Interdisciplinary Studies, Department of Chemistry and BiologyRensselaer Polytechnic Institute, Biotechnology Building Troy MI USA
| | - Teresa Gea
- Composting Research Group, Department of Chemical, Biological and Environmental Engineering, Escola d'EnginyeriaUniversitat Autònoma de Barcelona, Bellaterra Barcelona 08193 Spain
| | - Xavier Font
- Composting Research Group, Department of Chemical, Biological and Environmental Engineering, Escola d'EnginyeriaUniversitat Autònoma de Barcelona, Bellaterra Barcelona 08193 Spain
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17
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Zerhusen C, Bollmann T, Gödderz A, Fleischer P, Glüsen B, Schörken U. Microbial Synthesis of Nonionic Long‐Chain Sophorolipid Emulsifiers Obtained from Fatty Alcohol and Mixed Lipid Feeding. EUR J LIPID SCI TECH 2019. [DOI: 10.1002/ejlt.201900110] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Christian Zerhusen
- TH Köln – University of Applied Sciences Faculty of Applied Natural Sciences CHEMPARK Leverkusen, Kaiser‐Wilhelm‐Allee 51368 Leverkusen Germany
| | - Timo Bollmann
- TH Köln – University of Applied Sciences Faculty of Applied Natural Sciences CHEMPARK Leverkusen, Kaiser‐Wilhelm‐Allee 51368 Leverkusen Germany
| | - Andreas Gödderz
- TH Köln – University of Applied Sciences Faculty of Applied Natural Sciences CHEMPARK Leverkusen, Kaiser‐Wilhelm‐Allee 51368 Leverkusen Germany
| | - Peter Fleischer
- TH Köln – University of Applied Sciences Faculty of Applied Natural Sciences CHEMPARK Leverkusen, Kaiser‐Wilhelm‐Allee 51368 Leverkusen Germany
| | - Birgit Glüsen
- TH Köln – University of Applied Sciences Faculty of Applied Natural Sciences CHEMPARK Leverkusen, Kaiser‐Wilhelm‐Allee 51368 Leverkusen Germany
| | - Ulrich Schörken
- TH Köln – University of Applied Sciences Faculty of Applied Natural Sciences CHEMPARK Leverkusen, Kaiser‐Wilhelm‐Allee 51368 Leverkusen Germany
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18
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19
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Almond cold-pressed oil by-product as ingredient for cookies with potential health benefits: Chemical and sensory evaluation. FOOD SCIENCE AND HUMAN WELLNESS 2019. [DOI: 10.1016/j.fshw.2019.07.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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20
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Baccile N, Delbeke EIP, Brennich M, Seyrig C, Everaert J, Roelants SLKW, Soetaert W, Van Bogaert INA, Van Geem KM, Stevens CV. Asymmetrical, Symmetrical, Divalent, and Y-Shaped (Bola)amphiphiles: The Relationship between the Molecular Structure and Self-Assembly in Amino Derivatives of Sophorolipid Biosurfactants. J Phys Chem B 2019; 123:3841-3858. [DOI: 10.1021/acs.jpcb.9b01013] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Niki Baccile
- Sorbonne Université,
Centre National de la Recherche Scientifique, Laboratoire de Chimie
de la Matière Condensée de Paris, LCMCP, F-75005 Paris, France
| | - Elisabeth I. P. Delbeke
- Laboratory for Chemical Technology (LCT), Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 125, 9052 Ghent, Belgium
| | - Martha Brennich
- European Molecular Biology Laboratory, Synchrotron Crystallography Group, 71 Avenue des Martyrs, 38042 Grenoble, France
| | - Chloé Seyrig
- Sorbonne Université,
Centre National de la Recherche Scientifique, Laboratoire de Chimie
de la Matière Condensée de Paris, LCMCP, F-75005 Paris, France
| | | | | | - Wim Soetaert
- Bio Base Europe Pilot Plant (BBEU), Rodenhuizenkaai 1, 9042 Ghent (Desteldonk), Belgium
| | | | - Kevin M. Van Geem
- Laboratory for Chemical Technology (LCT), Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 125, 9052 Ghent, Belgium
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21
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Dai S, Zhu P, Suo Y, Lu H. Controllable CO 2-Responsiveness of an Oil-in-Water Emulsion by Varying the Number of Tertiary Amine Groups or the Position of the Hydroxyl Group of Tertiary Amine. J Phys Chem B 2019; 123:2558-2566. [PMID: 30802057 DOI: 10.1021/acs.jpcb.8b11344] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A series of water-soluble tertiary amines (TAs) are introduced into an oil-in-water (O/W) emulsion stabilized by sodium oleate (NaOA). TAs convert into bicarbonate salts upon bubbling of CO2, which could induce the increase of ionic strength of the aqueous phase, form ion pairs with NaOA by electrostatic interaction, and finally result in demulsification. ζ-Potential, conductivity, pH value, 1H NMR, separation rate, and interfacial tension are applied to figure out the effects of number of tertiary amine groups and different positions of the hydroxyl group. TA with an increasing number of tertiary amine groups can further stabilize the O/W emulsion and accelerate the process of demulsification by bubbling CO2. More tertiary amine groups bring about a more stable emulsion and faster demulsification by bubbling CO2. The position of the hydroxyl group is a key factor affecting the solubility of the corresponding ion pair formed with NaOA. The better the water solubility, the slower the demulsification. The worse the water solubility of the ion pair, the more perfect the demulsification is. More importantly, water-soluble TA, with proper structure, could bring about perfect demulsification.
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Affiliation(s)
- Shanshan Dai
- College of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu 610500 , P. R. China.,Engineering Research Center of Oilfield Chemistry , Ministry of Education , Chengdu 610500 , P. R. China
| | - Peiyao Zhu
- College of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu 610500 , P. R. China
| | - Yuxin Suo
- College of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu 610500 , P. R. China
| | - Hongsheng Lu
- College of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu 610500 , P. R. China.,Engineering Research Center of Oilfield Chemistry , Ministry of Education , Chengdu 610500 , P. R. China
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22
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Sekhar KPC, Nayak RR. Nonionic Glycolipids for Chromium Flotation- and Emulsion (W/O and O/W)-Based Bioactive Release. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:14347-14357. [PMID: 30392368 DOI: 10.1021/acs.langmuir.8b03138] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Biosourced surfactants are endeavored as a green alternative to biosurfactants and petrochemical surfactants having industrial utilization. Nine glycolipids with headgroup and chain length variation were derived from renewable resources like vegetable oils, carbohydrates, and amino acids. The concentration-dependent interfacial activity, foamability, wetting power, emulsification power, and solubilization capacities of glycolipids were investigated to provide a structure-activity relationship. Later, the metal flotation and emulsification experiments were performed. In general, for metal flotation, the surfactant should contain a hydrophobic tail, hydrophilic head, and chelating function. In the present investigation, it was observed that the headgroup of a glycolipid can serve as a hydrophilic head as well as perform a chelating function. Moreover, heat energy generated from the sunlight was utilized for metal flotation. Additionally, these glycolipids are capable to form stable sunflower oil-water (W/O and O/W) emulsions. The mechanical and thermal stabilities and hydrophobic chain length dependency of the prepared emulsions at different water volume fractions are explored. Furthermore, encapsulation and release of water-soluble (riboflavin and l-ascorbic acid) and oil-soluble (curcumin and α-tocopherol) bioactives in glycolipid emulsions were monitored. Thus, glycolipids under investigation had shown the possibility for pretreatment of chromium-containing wastewaters and bioactive-loaded emulsions toward the controlled release.
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Affiliation(s)
- Kanaparedu P C Sekhar
- Centre for Lipid Science and Technology , CSIR-Indian Institute of Chemical Technology , Hyderabad 500007 , India
- Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110001 , India
| | - Rati Ranjan Nayak
- Centre for Lipid Science and Technology , CSIR-Indian Institute of Chemical Technology , Hyderabad 500007 , India
- Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110001 , India
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23
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Maeng Y, Kim KT, Zhou X, Jin L, Kim KS, Kim YH, Lee S, Park JH, Chen X, Kong M, Cai L, Li X. A novel microbial technique for producing high-quality sophorolipids from horse oil suitable for cosmetic applications. Microb Biotechnol 2018; 11:917-929. [PMID: 30022625 PMCID: PMC6116743 DOI: 10.1111/1751-7915.13297] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 06/09/2018] [Accepted: 06/12/2018] [Indexed: 11/29/2022] Open
Abstract
Horse oil contains linoleic, palmitoleic and unsaturated fatty acids that are similar to those in human skin, and may therefore be an ideal substance from which to isolate biosurfactants for cosmetic products to improve human skin quality. Herein, an innovative approach was developed to synthesise sophorolipids from horse oil by hydrolysis, followed by fermentation using the yeast Candida bombicola. The yield of sophorolipids from direct fermentation of horse oil and hydrolysed horse oil was 40.6 ± 1.3 g l-1 and 58.4 ± 1.8 g l-1 respectively. To further increase the yield, 30-40 g l-1 glucose was added in a fed-batch fermentation process to maintain the pH between 4.0 and 4.5, resulting in a conversion yield of 71.7 ± 0.8 g l-1 . The purity and structure of the synthesised sophorolipids were analysed by ultra-performance liquid chromatography-mass spectrometry and nuclear magnetic resonance. An in vitro human dermal fibroblast model was used as a surrogate for human skin to measure elastase inhibition activity. Antiwrinkle properties of isolated sophorolipids were better than those of horse oil or hydrolysed horse oil in several in vitro assays. Furthermore, no cytotoxicity was observed at a concentration of 50 μg ml-1 , and wound-healing capacity was evident in a cell culture model. Additionally, the synthesised sophorolipids attenuated lipopolysaccharide-induced expression of inflammatory cytokines in macrophages, and efficiently inhibited several strains of bacteria and yeast. In conclusion, fed-batch fermentation of hydrolysed horse oil is a novel and efficient approach for producing high-quality and high-yield sophorolipids that exhibit great potential as cosmetic ingredients.
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Affiliation(s)
- Yoojae Maeng
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.,Collaborative Innovation Center of Biomedicine, Wenzhou Medical University-Wenzhou University, Wenzhou, 325035, China
| | - Kyoung Tae Kim
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.,Collaborative Innovation Center of Biomedicine, Wenzhou Medical University-Wenzhou University, Wenzhou, 325035, China
| | - Xuan Zhou
- Ningbo First Hospital, Ningbo, 315000, China
| | - Litai Jin
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.,Collaborative Innovation Center of Biomedicine, Wenzhou Medical University-Wenzhou University, Wenzhou, 325035, China
| | - Ki Soo Kim
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.,BiolandBiotec. Co., Ltd., Zhangjiang Modern Medical Device Park, Pudong, Shanghai, 201203, China
| | - Young Heui Kim
- SK Bioland, 59, Songjeongni 2-gil, Byeongchen, Dongnam, Cheonan, Chungnam, 31257, Korea
| | - Suyeon Lee
- SK Bioland, 59, Songjeongni 2-gil, Byeongchen, Dongnam, Cheonan, Chungnam, 31257, Korea
| | - Ji Ho Park
- SK Bioland, 162, Gwahaksaneop 3-ro, Ochang, Cheongwon, Cheongju, Chungbuk, 28125, Korea
| | - Xiuyu Chen
- BiolandBiotec. Co., Ltd., Zhangjiang Modern Medical Device Park, Pudong, Shanghai, 201203, China
| | - Mingxia Kong
- BiolandBiotec. Co., Ltd., Zhangjiang Modern Medical Device Park, Pudong, Shanghai, 201203, China
| | - Lu Cai
- Departments of Pediatrics, Radiation Oncology, Pharmacology and Toxicology, Pediatric Research Institute, University of Louisville, Louisville, KY, 40202, USA
| | - Xiaokun Li
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.,Collaborative Innovation Center of Biomedicine, Wenzhou Medical University-Wenzhou University, Wenzhou, 325035, China
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24
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Dai S, Suo Y, Liu D, Zhu P, Zhao J, Tan J, Lu H. Controllable CO2-responsiveness of O/W emulsions by varying the alkane carbon number of a tertiary amine. Phys Chem Chem Phys 2018; 20:11285-11295. [DOI: 10.1039/c8cp00527c] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A series of CO2-responsive oil-in-water (O/W) emulsions were prepared by introducing a hydrophobic tertiary amine (TA) with a varying alkane carbon number (ACN) into the emulsion stabilized by sodium dodecyl benzene sulfonate (SDBS).
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Affiliation(s)
- Shanshan Dai
- College of Chemistry and Chemical Engineering
- Southwest Petroleum University
- Chengdu 610500
- P. R. China
- Engineering Research Center of Oilfield Chemistry
| | - Yuxin Suo
- College of Chemistry and Chemical Engineering
- Southwest Petroleum University
- Chengdu 610500
- P. R. China
- Engineering Research Center of Oilfield Chemistry
| | - Dongfang Liu
- College of Chemistry and Chemical Engineering
- Southwest Petroleum University
- Chengdu 610500
- P. R. China
- Engineering Research Center of Oilfield Chemistry
| | - Peiyao Zhu
- College of Chemistry and Chemical Engineering
- Southwest Petroleum University
- Chengdu 610500
- P. R. China
- Engineering Research Center of Oilfield Chemistry
| | - Jihe Zhao
- College of Chemistry and Chemical Engineering
- Southwest Petroleum University
- Chengdu 610500
- P. R. China
- Engineering Research Center of Oilfield Chemistry
| | - Jiang Tan
- College of Chemistry and Chemical Engineering
- Southwest Petroleum University
- Chengdu 610500
- P. R. China
- Engineering Research Center of Oilfield Chemistry
| | - Hongsheng Lu
- College of Chemistry and Chemical Engineering
- Southwest Petroleum University
- Chengdu 610500
- P. R. China
- Engineering Research Center of Oilfield Chemistry
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25
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Smułek W, Kaczorek E, Hricovíniová Z. Alkyl Xylosides: Physico-Chemical Properties and Influence on Environmental Bacteria Cells. J SURFACTANTS DETERG 2017; 20:1269-1279. [PMID: 29200811 PMCID: PMC5686273 DOI: 10.1007/s11743-017-2012-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 08/18/2017] [Indexed: 12/03/2022]
Abstract
A group of four selected non-ionic surfactants based on carbohydrates, namely octyl d-xyloside (C8X), nonyl d-xyloside (C9X), decyl d-xyloside (C10X) and dodecyl d-xyloside (C12X), have been investigated to accomplish a better understanding of their physico-chemical properties as well as biological activities. The surface-active properties, such as critical micelle concentration (CMC), emulsion and foam stability, the impact of the compounds on cell surface hydrophobicity and cell membrane permeability together with their toxicity on the selected bacterial strains have been determined as well. The studied group of surfactants showed high surface-active properties allowing a decrease in the surface tension to values below 25 mN m-1 for dodecyl d-xyloside at the CMC. The investigated compounds did not have any toxic influence on two Pseudomonas bacterial strains at concentrations below 25 mg L-1. The studied long-chain alkyl xylosides influenced both the cell inner membrane permeability and the cell surface hydrophobicity. Furthermore, the alkyl chain length, as well as the surfactant concentration, had a significant impact on the modifications of the cell surface properties. The tested non-ionic surfactants exhibited strong surface-active properties accompanied by the significant influence on growth and properties of Pseudomonas bacteria cells.
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Affiliation(s)
- Wojciech Smułek
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland
| | - Ewa Kaczorek
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland
| | - Zuzana Hricovíniová
- Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38 Bratislava, Slovakia
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26
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Koh A, Todd K, Sherbourne E, Gross RA. Fundamental Characterization of the Micellar Self-Assembly of Sophorolipid Esters. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:5760-5768. [PMID: 28510440 DOI: 10.1021/acs.langmuir.7b00480] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Surfactants are ubiquitous constituents of commercial and biological systems that function based on complex structure-dependent interactions. Sophorolipid (SL) n-alkyl esters (SL-esters) comprise a group of modified naturally derived glycolipids from Candida bombicola. Herein, micellar self-assembly behavior as a function of SL-ester chain length was studied. Surface tensions as low as 31.2 mN/m and critical micelle concentrations (CMCs) as low as 1.1 μM were attained for diacetylated SL-decyl ester (dASL-DE) and SL-octyl ester, respectively. For deacetylated SL-esters, CMC values reach a lower limit at SL-ester chains above n-butyl (SL-BE, 1-3 μM). This behavior of SL-esters with increasing hydrophobic tail length is unlike other known surfactants. Diffusion-ordered spectroscopy (DOSY) and T1 relaxation NMR experiments indicate this behavior is due to a change in intramolecular interactions, which impedes the self-assembly of SL-esters with chain lengths above SL-BE. This hypothesis is supported by micellar thermodynamics where a disruption in trends occurs at n-alkyl ester chain lengths above those of SL-BE and SL-hexyl ester (SL-HE). Diacetylated (dA) SL-esters exhibit an even more unusual trend in that CMC increases from 1.75 to 815 μM for SL-ester chain lengths of dASL-BE and dASL-DE, respectively. Foaming studies, performed to reveal the macroscopic implications of SL-ester micellar behavior, show that the observed instability in foams formed using SL-esters are due to coalescence, which highlights the importance of understanding intermicellar interactions. This work reveals that SL-esters are an important new family of green high-performing surfactants with unique structure-property relationships that can be tuned to optimize micellar characteristics.
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Affiliation(s)
- Amanda Koh
- Department of Chemical & Biological Engineering, ‡Department of Biology, and §Department of Chemistry, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute (RPI) , Biotechnology Building, 110 Eighth Street, Troy, New York 12180, United States
| | - Katherine Todd
- Department of Chemical & Biological Engineering, ‡Department of Biology, and §Department of Chemistry, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute (RPI) , Biotechnology Building, 110 Eighth Street, Troy, New York 12180, United States
| | - Ezekiel Sherbourne
- Department of Chemical & Biological Engineering, ‡Department of Biology, and §Department of Chemistry, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute (RPI) , Biotechnology Building, 110 Eighth Street, Troy, New York 12180, United States
| | - Richard A Gross
- Department of Chemical & Biological Engineering, ‡Department of Biology, and §Department of Chemistry, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute (RPI) , Biotechnology Building, 110 Eighth Street, Troy, New York 12180, United States
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27
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Influence of Sophorolipid Structure on Interfacial Properties of Aqueous-Arabian Light Crude and Related Constituent Emulsions. J AM OIL CHEM SOC 2016. [DOI: 10.1007/s11746-016-2913-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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28
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Koh A, Gross R. A versatile family of sophorolipid esters: Engineering surfactant structure for stabilization of lemon oil-water interfaces. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.07.089] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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29
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Koh A, Gross R. Molecular editing of sophorolipids by esterification of lipid moieties: Effects on interfacial properties at paraffin and synthetic crude oil-water interfaces. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.07.084] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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